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Factors controlling superelastic damping capacity of SMAs
- 1.0334215 - FZÚ 2010 RIV US eng J - Journal Article
Heller, Luděk - Šittner, Petr - Pilch, Jan - Landa, Michal
Factors controlling superelastic damping capacity of SMAs.
[Faktory kontrolující superelastické tlumení slitin s tvarovou pamětí.]
Journal of Materials Engineering and Performance. Roč. 18, 5-6 (2009), 603-611. ISSN 1059-9495. E-ISSN 1544-1024
Institutional research plan: CEZ:AV0Z10100520; CEZ:AV0Z20760514
Keywords : shape memory alloys * superelastic damping * thermomechanical testing
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.592, year: 2009
In this paper, questions linked to the practical use of superelastic damping exploiting stress-induced martensitic transformation for vibration damping are addressed. Four parameters, particularly vibration amplitude, prestrain, temperature of surroundings, and frequency, are identified as having the most pronounced influence on the superelastic damping. Their influence on superelastic damping of a commercially available superelastic NiTi wire was experimentally investigated using a self-developed dedicated vibrational equipment. Experimental results show how the vibration amplitude, frequency, prestrain, and temperature affect the capacity of a superelastic NiTi wire to dissipate energy of vibrations through the superelastic damping. A special attention is paid to the frequency dependence (i.e., rate dependence) of the superelastic damping.
Práce se zabývá otázkami spojenými s praktickým využitím napěťově indukované martensitické transformace pro tlumení vibrací. Je studován vliv čtyř parametrů - amplituda vibrací, předdeformace, teplota okolí a frekvence na velikost superelastického tlumení.
Permanent Link: http://hdl.handle.net/11104/0179009
Number of the records: 1